itel CAMERA Exercise 14c Use i) Which arc subtends ABE? O) Which arc subtends BÊC? Write down two angles equal to BÊC. () Which arc subtends EÂC? ) Write down an angle equal to EÂC. B. E. Fig. 14.23 2 Find the marked angle in each of the following. Where a point O is given it is the centre of the circle. (Hint: make a careful copy of each figure and write in the angles as they are found. Some constructions may be necessary.) (2) (b)

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Chapter11: Addition And Subtraction Of Decimal Fractions
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# Geometry Problem on Circle Angles and Arcs

## Exercise 14c

### Question 1
Use Fig. 14.23 to answer the following:

Given a circle with points A, B, C, D, and E lying on the circumference and chords AB, BC, CD, DE, and AE.

**(a) Which arc subtends ∠AΒΕ?**
- Answer: Arc AE.

**(b) Write down an angle equal to ∠ΑΒΕ.**
- Answer: ∠ADE (angles subtended by the same arc are equal).

**(c) Which arc subtends ∠BΕC?**
- Answer: Arc BC.

**(d) Write down two angles equal to ∠ΒΕC.**
- Answer: ∠BDC and ∠BAC (angles subtended by the same arc are equal).

**(e) Which arc subtends ∠AΕC?**
- Answer: Arc AC.

**(f) Write down an angle equal to ∠FΑC.**
- Answer: ∠EBD (angles subtended by the same arc are equal).

### Figure 14.23
- The diagram features a circle with chords AB, BE, EC, CA, and AD drawn inside it.
- The central points of interest are the intersection points on the circumference labeled A, B, C, D, and E.

### Question 2
Find the marked angle in each of the following (two diagrams shown):

- **Hints:**
    - Point O is the center of the circle.
    - Copy each figure and write in the angles as they are found. Some constructions may be necessary. 

**(a)** First Circle Diagram (Fig. 14.23):
- Diagram shows a circle with a central angle marked as 40°.
  
**(b)** Second Circle Diagram (Fig. 14.23):
- Diagram shows a circle with a central angle marked as 58°.

Ensure students understand that angles subtended by the same arc in a circle are equal and the relationship between arcs and the angles they subtend.
Transcribed Image Text:# Geometry Problem on Circle Angles and Arcs ## Exercise 14c ### Question 1 Use Fig. 14.23 to answer the following: Given a circle with points A, B, C, D, and E lying on the circumference and chords AB, BC, CD, DE, and AE. **(a) Which arc subtends ∠AΒΕ?** - Answer: Arc AE. **(b) Write down an angle equal to ∠ΑΒΕ.** - Answer: ∠ADE (angles subtended by the same arc are equal). **(c) Which arc subtends ∠BΕC?** - Answer: Arc BC. **(d) Write down two angles equal to ∠ΒΕC.** - Answer: ∠BDC and ∠BAC (angles subtended by the same arc are equal). **(e) Which arc subtends ∠AΕC?** - Answer: Arc AC. **(f) Write down an angle equal to ∠FΑC.** - Answer: ∠EBD (angles subtended by the same arc are equal). ### Figure 14.23 - The diagram features a circle with chords AB, BE, EC, CA, and AD drawn inside it. - The central points of interest are the intersection points on the circumference labeled A, B, C, D, and E. ### Question 2 Find the marked angle in each of the following (two diagrams shown): - **Hints:** - Point O is the center of the circle. - Copy each figure and write in the angles as they are found. Some constructions may be necessary. **(a)** First Circle Diagram (Fig. 14.23): - Diagram shows a circle with a central angle marked as 40°. **(b)** Second Circle Diagram (Fig. 14.23): - Diagram shows a circle with a central angle marked as 58°. Ensure students understand that angles subtended by the same arc in a circle are equal and the relationship between arcs and the angles they subtend.
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